This holder fits all standard sized Survey Field Notebooks. It allows you to carry 2 pens or pencils plus a 6 inch flat map scale in a secure and convient position. .You can put the strap on the page you are using as a bookmark or wrap it around the book

This Pen Holder fits all standard sized survey Field Notebooks. It allows you to carry your pen or pencil in a secure and convient position.You can put the strap on the page you are using as a bookmark or wrap it around the book to keep it closed while no